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SHM of liquid

A V-shaped tube attached to the ground with its vertex. It's one leg makes an angle of \( 30 ^\circ\), and the other leg makes an angle of \(60 ^\circ\) with the horizontal. The tube is filled with a liquid in a total length of \(1\text{ m}\). Now the liquid at one side is displaced a little.Find the Time - period of SHM.